How to fix Cannot use 'String' as class name as it is reserved in error?

Question

1C-Bitrix

I am transferring Bitrix from a php 5.6 server to a php 7 server. I changed the lines in DBconf and .setting to work with msqli, but there was an error, the solution of which could not be found on the Internet.
when accessing
http://domain/bitrix/admin/index.php#authorize
, an error occurs
Fatal error: Cannot use 'String' as class name as it is reserved in /var/www/domain/bitrix/modules/main/ lib/text/string.php on line 4
Is there a solution? there is no support for Bitrix, is it possible to do without it? if so, how?

Answer 1

For everyone who has encountered this problem and cannot update Bitrix to the latest version:
1. Install the php5.6 version
2. Go to the settings: /bitrix/admin/settings.php?lang=ru&mid=main&tabControl_active_tab=edit5 and uncheck enhanced checking the correct installation of updates
3. Update Bitrix to the latest version
4. Install the version php7.1

Answer 2

It is necessary to update Bitrix, in new versions this problem is solved. If the update cannot be done, then leave php 5.6, let it spin on it.

Answer 3

Rename the class to string7 for example) find where Text\String is used and replace with Text\String7
The rest seems to work on 7.2.